void imx233_lcdif_dma_send(void *buf, unsigned width, unsigned height)
{
#if IMX233_SUBTARGET >= 3780
imx233_lcdif_enable_bus_master(true);
HW_LCDIF_CUR_BUF = (uint32_t)buf;
HW_LCDIF_TRANSFER_COUNT = BF_OR2(LCDIF_TRANSFER_COUNT, V_COUNT(height), H_COUNT(width));
BF_SET(LCDIF_CTRL, DATA_SELECT);
BF_SET(LCDIF_CTRL, RUN);
#endif
}
void imx233_lcdif_pio_send(bool data_mode, unsigned len, uint32_t *buf)
{
unsigned max_xfer_size = 0xffff;
if(len == 0)
return;
if(lcdif_word_length == HW_LCDIF_CTRL__WORD_LENGTH_16_BIT)
max_xfer_size = 0x1fffe;
imx233_lcdif_wait_ready();
unsigned msk = imx233_lcdif_enable_irqs(0);
imx233_lcdif_enable_bus_master(false);
do
{
unsigned burst = MIN(len, max_xfer_size);
len -= burst;
unsigned count = burst;
if(lcdif_word_length != HW_LCDIF_CTRL__WORD_LENGTH_8_BIT)
{
if(burst & 1)
burst++;
count = burst / 2;
}
else
count = burst;
HW_LCDIF_TRANSFER_COUNT = 0;
HW_LCDIF_TRANSFER_COUNT = 0x10000 | count;
__REG_CLR(HW_LCDIF_CTRL) = HW_LCDIF_CTRL__DATA_SELECT | HW_LCDIF_CTRL__RUN;
if(data_mode)
__REG_SET(HW_LCDIF_CTRL) = HW_LCDIF_CTRL__DATA_SELECT;
__REG_SET(HW_LCDIF_CTRL) = HW_LCDIF_CTRL__RUN;
burst = (burst + 3) / 4;
while(burst-- > 0)
{
while(HW_LCDIF_STAT & HW_LCDIF_STAT__LFIFO_FULL);
HW_LCDIF_DATA = *buf++;
}
while(HW_LCDIF_CTRL & HW_LCDIF_CTRL__RUN);
}while(len > 0);
imx233_lcdif_enable_bus_master(true);
imx233_lcdif_enable_irqs(msk);
}
void imx233_lcdif_pio_send(bool data_mode, unsigned len, void *buf)
{
imx233_lcdif_wait_ready();
if(len == 0)
return;
#if IMX233_SUBTARGET >= 3780
imx233_lcdif_enable_bus_master(false);
#endif
if(data_mode)
BF_SET(LCDIF_CTRL, DATA_SELECT);
else
BF_CLR(LCDIF_CTRL, DATA_SELECT);
switch(BF_RD(LCDIF_CTRL, WORD_LENGTH))
{
case BV_LCDIF_CTRL_WORD_LENGTH__8_BIT: pio_send(len, 1, buf); break;
case BV_LCDIF_CTRL_WORD_LENGTH__16_BIT: pio_send(len, 2, buf); break;
#if IMX233_SUBTARGET >= 3780
case BV_LCDIF_CTRL_WORD_LENGTH__18_BIT: pio_send(len, 4, buf); break;
#endif
default: panicf("Don't know how to handle this word length");
}
}
